After a loading screen it is possible to create an extra tab, but it will not be saved. If that 6th tab is closed, it will not be possible to create another 6th or greater tab again until the next loading screen, but that 6th tab can be accessed by left-clicking the arrow adjacent to the add tab symbol. In this way an unknown number of extra chat tabs (greater than 16) can be added that are only accessible through the arrow. However, these chat tabs are removed upon re-logging

One chat line is limited to 199 characters.

The chat panel can save up to 5 tabs.

The range for say chat is 2000 units.

If you send messages too frequently (unspecified), subsequent messages will be blocked for an undetermined (and possibly variable) length of time with "Your message was suppressed due to excessive messaging." displayed in your chat window. Using too many words recognized by the profanity filter in succession can lead to automatic suspension of the account.

Whisper messages sent to a player that is on the character selection screen will not go through. Whispers sent during loading screens will, however.